From: Marcus Hartig <marcus@marcush.de>
To: "Prakash K. Cheemplavam" <prakashpublic@gmx.de>,
linux-kernel@vger.kernel.org
Subject: Re: 2.6.0-test9 /-mm3 SATA siimage - bad disk performance
Date: Sat, 15 Nov 2003 18:54:34 +0100 [thread overview]
Message-ID: <3FB6685A.8010607@marcush.de> (raw)
In-Reply-To: <3FB5EDC1.8010805@gmx.de>
Prakash K. Cheemplavam wrote:
> I have a similar problem: With 2.4.22-ac3 I had 37mb/sec with my Samsung
> HD and 49MB/sec with IBM/Hitachi, now with 2.6 (all I tried, including
> test9-mm2) I had only 20mb/sec for Samsung and about 39mb/sec for the
> IBM. Motherboard is Abit NF7-S Rev2.0, as well, so same situation with
> the siimage 1.06 driver. I wanted to run some dd tests as well, but it
> is a real performance hit. Playing with readahead or other hdparm
> options didn't help either.
I get a tip from Mark Hahn to set the pci latency to 64. And wow, with
fedora 2.4.22 kernel I get then 41MB/sec with max_k_p_r 128. But,...
after copying big files I get ext3-fs erros, cannot read inode etc and a
bus error. Bumm!
Maybe it runs better with your harddrives.
Marcus
next prev parent reply other threads:[~2003-11-15 17:54 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-15 5:19 2.6.0-test9 /-mm3 SATA siimage - bad disk performance Marcus Hartig
2003-11-15 9:11 ` Prakash K. Cheemplavam
2003-11-15 17:54 ` Marcus Hartig [this message]
2003-11-15 18:12 ` Prakash K. Cheemplavam
2003-11-15 19:17 ` Marcus Hartig
2003-11-18 18:18 ` Prakash K. Cheemplavam
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